Chief Financial Officer Tim Stone will be leaving Snap Inc less than a year after taking the job, the company said on Tuesday, the latest in a string of executive departures from Snap over the past year.

The U.S. Justice Department and Securities and Exchange Commission have subpoenaed Snap Inc for information about its March 2017 initial public offering, the social media app maker told Reuters on Tuesday.

Snap Inc lost more users than Wall Street expected in the third quarter as it continued to grapple with an unpopular redesign of its Snapchat photo-messaging app and fierce competition from Facebook Inc's Instagram.

Snap Inc’s Chief Executive Evan Spiegel has set a goal to achieve full-year profitability in 2019 and outlined a new set of strategic goals, online news service Cheddar reported on Thursday, citing a memo.